diff --git a/3.9/alpine3.19/Dockerfile b/3.9/alpine3.19/Dockerfile
index 53140cd3b..3be566306 100644
--- a/3.9/alpine3.19/Dockerfile
+++ b/3.9/alpine3.19/Dockerfile
@@ -22,8 +22,8 @@ RUN set -eux; \
 	;
 
 ENV GPG_KEY E3FF2839C048B25C084DEBE9B26995E310250568
-ENV PYTHON_VERSION 3.9.20
-ENV PYTHON_SHA256 6b281279efd85294d2d6993e173983a57464c0133956fbbb5536ec9646beaf0c
+ENV PYTHON_VERSION 3.9.21
+ENV PYTHON_SHA256 3126f59592c9b0d798584755f2bf7b081fa1ca35ce7a6fea980108d752a05bb1
 
 RUN set -eux; \
 	\
diff --git a/3.9/alpine3.20/Dockerfile b/3.9/alpine3.20/Dockerfile
index d13b3e938..9599084f5 100644
--- a/3.9/alpine3.20/Dockerfile
+++ b/3.9/alpine3.20/Dockerfile
@@ -22,8 +22,8 @@ RUN set -eux; \
 	;
 
 ENV GPG_KEY E3FF2839C048B25C084DEBE9B26995E310250568
-ENV PYTHON_VERSION 3.9.20
-ENV PYTHON_SHA256 6b281279efd85294d2d6993e173983a57464c0133956fbbb5536ec9646beaf0c
+ENV PYTHON_VERSION 3.9.21
+ENV PYTHON_SHA256 3126f59592c9b0d798584755f2bf7b081fa1ca35ce7a6fea980108d752a05bb1
 
 RUN set -eux; \
 	\
diff --git a/3.9/bookworm/Dockerfile b/3.9/bookworm/Dockerfile
index feb6d2fb1..58d7bf1bb 100644
--- a/3.9/bookworm/Dockerfile
+++ b/3.9/bookworm/Dockerfile
@@ -25,8 +25,8 @@ RUN set -eux; \
 	rm -rf /var/lib/apt/lists/*
 
 ENV GPG_KEY E3FF2839C048B25C084DEBE9B26995E310250568
-ENV PYTHON_VERSION 3.9.20
-ENV PYTHON_SHA256 6b281279efd85294d2d6993e173983a57464c0133956fbbb5536ec9646beaf0c
+ENV PYTHON_VERSION 3.9.21
+ENV PYTHON_SHA256 3126f59592c9b0d798584755f2bf7b081fa1ca35ce7a6fea980108d752a05bb1
 
 RUN set -eux; \
 	\
diff --git a/3.9/bullseye/Dockerfile b/3.9/bullseye/Dockerfile
index cc34bd363..075f4461e 100644
--- a/3.9/bullseye/Dockerfile
+++ b/3.9/bullseye/Dockerfile
@@ -25,8 +25,8 @@ RUN set -eux; \
 	rm -rf /var/lib/apt/lists/*
 
 ENV GPG_KEY E3FF2839C048B25C084DEBE9B26995E310250568
-ENV PYTHON_VERSION 3.9.20
-ENV PYTHON_SHA256 6b281279efd85294d2d6993e173983a57464c0133956fbbb5536ec9646beaf0c
+ENV PYTHON_VERSION 3.9.21
+ENV PYTHON_SHA256 3126f59592c9b0d798584755f2bf7b081fa1ca35ce7a6fea980108d752a05bb1
 
 RUN set -eux; \
 	\
diff --git a/3.9/slim-bookworm/Dockerfile b/3.9/slim-bookworm/Dockerfile
index 350a3dbd1..f8516e565 100644
--- a/3.9/slim-bookworm/Dockerfile
+++ b/3.9/slim-bookworm/Dockerfile
@@ -25,8 +25,8 @@ RUN set -eux; \
 	rm -rf /var/lib/apt/lists/*
 
 ENV GPG_KEY E3FF2839C048B25C084DEBE9B26995E310250568
-ENV PYTHON_VERSION 3.9.20
-ENV PYTHON_SHA256 6b281279efd85294d2d6993e173983a57464c0133956fbbb5536ec9646beaf0c
+ENV PYTHON_VERSION 3.9.21
+ENV PYTHON_SHA256 3126f59592c9b0d798584755f2bf7b081fa1ca35ce7a6fea980108d752a05bb1
 
 RUN set -eux; \
 	\
diff --git a/3.9/slim-bullseye/Dockerfile b/3.9/slim-bullseye/Dockerfile
index a5ea99b0b..d6e8e3cd6 100644
--- a/3.9/slim-bullseye/Dockerfile
+++ b/3.9/slim-bullseye/Dockerfile
@@ -25,8 +25,8 @@ RUN set -eux; \
 	rm -rf /var/lib/apt/lists/*
 
 ENV GPG_KEY E3FF2839C048B25C084DEBE9B26995E310250568
-ENV PYTHON_VERSION 3.9.20
-ENV PYTHON_SHA256 6b281279efd85294d2d6993e173983a57464c0133956fbbb5536ec9646beaf0c
+ENV PYTHON_VERSION 3.9.21
+ENV PYTHON_SHA256 3126f59592c9b0d798584755f2bf7b081fa1ca35ce7a6fea980108d752a05bb1
 
 RUN set -eux; \
 	\
diff --git a/versions.json b/versions.json
index bf6fb1fe5..5c2899952 100644
--- a/versions.json
+++ b/versions.json
@@ -103,7 +103,7 @@
   "3.9": {
     "checksums": {
       "source": {
-        "sha256": "6b281279efd85294d2d6993e173983a57464c0133956fbbb5536ec9646beaf0c"
+        "sha256": "3126f59592c9b0d798584755f2bf7b081fa1ca35ce7a6fea980108d752a05bb1"
       }
     },
     "setuptools": {
@@ -117,6 +117,6 @@
       "alpine3.20",
       "alpine3.19"
     ],
-    "version": "3.9.20"
+    "version": "3.9.21"
   }
 }